Lifting-jack.



Noi 879.396.

PATBNTED FEB. 18, 1908. W. E. MAXWELL & J. M. HOWELL.

LIFTING JACK. APPLICATION FILED 00122. 1907.

' To all whom it may concern:

UNITED STATES P T WIL IAM E. MAXWELL :AND JOHN M. ROWELL, F ALABAMA.

LIETING-J'AOK.

Be it known that WILLIAM and JOHN M. RowELL, .citizens of the United States, residing at Wylam, in the county of Jefferson and State of Alabama, have invented certain new and useful Improvements in Lifting-Jacks, of which the' following is a specification.

a view of a lifting-jack embodyi V ftion' with the attachment in posi tli on thereon,

x This invention relatesto improvements in lifting-jacks and attachments therefor, and

it pertains to a liftin -jack having a screw construction, all of'w ch will be fully described hereinafter andparticularly pointed out in the claims. 2

In' the accompanying drawings, Figure 1 is the inven- Fig. 2 is a similar view partly in section, Fig. 3 is a detailperspective view of a portion of they levei' showing the mannerin which the leverage may be increased,-

Like numei ls of reference. designate corresponding parts in all'the figures of the dr" wings. J V i designates a tubular standard provided A wit an;interioi;ly-threaded u per portion for ing a fixed nut and rece vmg a jack:

screw 2 provided-near its upper end with 'a rounded enlargement 3 adapted to be en may be folded up when not in use. 7 'seenthat by this arrangement the lever can gagediby a bar or lever for rotating said screw.

4 is a lever provided with an opening at the point 5 through which theupper end of the screw 2 passes allowing the ortipn 6 'ofthe.

said lever to. rest u on the e arged portion 3 .ofthe screw 2.. T e leve'r 4 is provided with the brace-arms 7 and 8 which are secured to said lever at the points 9 and 10, the other ends of said braces beingl secured. to the collar 11 which. surrounds t e tubular portion 1 and which is adapted torotate when the lever -4 is moved from side -to side. I The lever is hinged at the point 12 in order that the same It will be be freely rotated while the standard and screw will remain stationary. The jack as shown in Fig.1 maybe placed under the object to be moved and said object may be raised in the usual manner by means of the screw 2. When it is' desired. to move the object to oneside-or the other as is often the Specification. Letters Patent. Application filed October 2:2.1907. Serial no, 398.583.

E. MAXWELL 'quiring. a more eittended explanation.

to rotate.

Iatented see. 18', mos.

case-in replacing cars or the like, the'head 13v upon which saidobjeot is restingis moved around to the-position desiredby moving the lever'4 to the right or left. The end of said lever 4 'isinade round in order that a (pipe or other tubular member may be attache to the same to increase the leverage.

It will be noticed that the attachment which consists of the lever 4, the brace arms 7 and 8,' and the collar 11 may be readily and puickly detached from the jack pro er and olded up out of-the way when the evice is not in use.

. From thefore oing description 1 taken in connection Witht eaccompanying drawings, the cqnstr'uct-iongand'operation'of the invention. will be readily; nderstood Without redesc'ribeh bu "invention, what w 1; Alifting-jac rising a standard, a screw engaging the stan on the upper end oiisiaid'screw and a collar surrounding said standard and connectedto said lever, said lever and' cdllar being adapted 2. A lifting-jack comp-r a standard; a screw'engaging the standard, a lever mounted on the upper end of said screw, a collar surrounding said standard and brace-arms ex- K v tending from. said collar to said lever.

ard,alever mounted 3..-A lifting-jack com rising a standard, a

screw engaging the s tan ard, a lever mounted on the upper end ofsaid screw, and'a'collar surrounding said standard, said collar being adapted to slide vertically on said standard when said screw is rotated.

4. A lifting-jack comprising a standard, a

screw engaging the standard, a collar surrounding said standard said collar being adapted to slide vertically on said standard, and a lever mounted on the unper end of said. screw said. lever being provi .ed with a head 

